Umoya Omusha — ORC Rating

GPH

568.5

OSN

551.1

LOA

12.75 m

Displacement

6060 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7816

Medium

1.0856

High

1.2726

Triple Offshore

Low

1.0188

Medium

1.3472

High

1.5437

Boat Specifications

Dimensions

Length overall: 12.75 m
Beam: 3.91 m
Draft: 2.57 m
Displacement: 6060 kg
Crew weight: 812 kg
Wetted surface: 31.91 m²

Sails

Mainsail: 54.78 m²
Genoa: 32.39 m²
Spinnaker: 124.78 m²
Asymmetric spinnaker: 0 m²

Design

Type: Fast 42
Builder: Robertson & Caine
Designer: Simonis
Year built: 1995

Velocity Prediction

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into WX Navigator or compatible navigation software.

6,44.1,4.97127,52,5.52,60,5.91,75,6.28,90,6.26,110,6.24,120,6.05,135,5.43,142.6,4.984803,150,4.58
8,42.3,5.948912,52,6.7,60,7.11,75,7.44,90,7.53,110,7.58,120,7.42,135,6.79,146.2,6.01696,150,5.77
10,41.8,6.801024,52,7.53,60,7.79,75,8,90,8.02,110,8.25,120,8.13,135,7.75,148.4,6.985807,150,6.87
12,39.6,7.112143,52,7.88,60,8.12,75,8.39,90,8.43,110,8.74,120,8.72,135,8.29,150,7.72,154.9,7.464922
14,38.6,7.267884,52,8.03,60,8.31,75,8.76,90,8.89,110,9.07,120,9.37,135,8.87,150,8.24,165.2,7.633245
16,37.9,7.337621,52,8.12,60,8.43,75,9.02,90,9.36,110,9.43,120,9.79,135,9.55,150,8.76,180,7.96
20,37.2,7.482456,52,8.27,60,8.57,75,9.25,90,10.01,110,10.14,120,10.55,135,11.32,150,10.06,180,8.93

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.52	5.91	6.28	6.26	6.24	6.05	5.43	4.58
8	6.7	7.11	7.44	7.53	7.58	7.42	6.79	5.77
10	7.53	7.79	8	8.02	8.25	8.13	7.75	6.87
12	7.88	8.12	8.39	8.43	8.74	8.72	8.29	7.72
14	8.03	8.31	8.76	8.89	9.07	9.37	8.87	8.24
16	8.12	8.43	9.02	9.36	9.43	9.79	9.55	8.76
20	8.27	8.57	9.25	10.01	10.14	10.55	11.32	10.06

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.1°	3.57	142.6°	3.96
8	42.3°	4.4	146.2°	5
10	41.8°	5.07	148.4°	5.95
12	39.6°	5.48	154.9°	6.76
14	38.6°	5.68	165.2°	7.38
16	37.9°	5.79	180°	7.96
20	37.2°	5.96	180°	8.93

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